The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 27, 1984
Filed:
Oct. 26, 1981
Karl-Heinz Wilms, Emmering, DE;
Optische Werke G. Rodenstock, Munich, DE;
Abstract
A contact glass with two reflecting surfaces for observing the chamber angle of a human eye in proximity of the iris, with a reflecting surface arranged laterally of the eye to be examined and a central reflecting surface to be located in the area of the common optical axis of the eye and of the axis of the contact glass; the path of observation rays is guided from the eye of the observer to the central reflecting surface and from the latter by way of the lateral reflecting surface into the interior of the eye whereby the lateral reflecting surface is so arranged to the common axis that its plane intersects the eye to be examined outside of the corneal area thereof and extends toward the eye to be examined up to a point to the rear of the center tangent of the eye abutment surface of the contact glass.